Suppress test 1932 flakes caused by spurious wakeups

Spurious 'wait' wakeups can cause locks to appear contended when they
otherwise wouldn't be. This could make test 1932 somewhat flaky since
it could see contention in these cases. To prevent this flakiness this
suppresses output when these operations take place. This should not
affect the tests usefulness since those portions are mainly about
testing waiting behavior.

Test: ./test.py --host
Bug: 149308087
Change-Id: Ia6263a641429e47aa29c05a14f841c7935892de2
1 file changed